Prediction Traders Put Their Money on Obama

Barack Obama was trading at $7.12 a share, down one cent, in prediction markets yesterday, but still well ahead of Hillary Clinton, who was down a penny at $2.91.

Could the markets know more about politics than the polls?

Opinion polls show a tight race between the two candidates for the Democratic nomination. But in the prediction markets, where investors stake their money on the candidate they believe will win -- and face a...